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Results for “STETHOSCOPE”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

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At least 1,063 records · Page 59Linked to original sources
PubMed1998

Caudal epidurals: the whoosh test.

Caudal epidural injection is a simple procedure that carries a low risk of complications. The whoosh test (injection of air into the caudal epidural space with simultaneous auscultation over the thoracolumbar spine) has been recommended as an aid to correct needle placement. A 1-year prospective study, using fluoroscopic imaging to identify needle position, was conducted to compare the sensitivity and specificity of the whoosh test with that of clinical impression alone in assessing correct needle placement in the caudal space. Of 131 patients studied, correct needle placement was achieved in 121 on the first attempt (92%). Clinical impression alone had a sensitivity of 94% and a specificity of 20%. The whoosh test had a sensitivity of 80% and a specificity of 60%. The whoosh test is superior to clinical judgment in detecting incorrect caudal needle placement.

Air↗
PubMed1997

A dual technique for identification of the epidural space.

A method of identifying the epidural space is described in which the traditional loss of resistance to air technique is combined with amplification of the sound made by the epidural needle as it traverses the interspinous ligament and the ligamentum flavum and then enters the epidural space. The method retains all the advantages of the loss of resistance to air technique whilst, in addition, the auditory amplification gives a slightly earlier warning of entry into the epidural space. The apparatus necessary is readily available and the technique is easy to use. In addition to being useful in difficult epidurals, the technique would also be an excellent teaching aid.

Air↗
PubMed1990

The relationship between peak expiratory sound intensity and peak expiratory flow rate in the thoroughbred horse during exercise.

Peak expiratory sound intensity (dB SPL), obtained by means of a radiostethoscope, and peak expiratory flow rate, obtained using a mask incorporating a thermistor flow sensor, were measured in six Thoroughbreds over a range of stride rates from 100 to 140 strides per min. The results show linear relationships between peak dB SPL and stride rate, peak expiratory flow rate and stride rate and also between peak expiratory flow rate and peak dB SPL. Peak expiratory dB SPL can therefore indicate peak expiratory flow rate.

Animals↗
PubMedDate not supplied

Monitoring hemodialysis vascular access by digital phonoangiography.

We are intrigued by the possibility of using digital spectral analysis to detect hemodialysis vascular access stenosis. Such a monitor could be inexpensive, noninvasive, and portable enough to allow continuous monitoring. This report suggests how individuals wishing to conduct such research can use a simple but effective transducer design we have employed, how the data so obtained can be analyzed in the time and frequency domains using inexpensive digital signal processing software available via the Internet, and how data recordings might be shared via the Internet to facilitate collaboration.

Arteriovenous Shunt, Surgical↗
PubMed2002

Modeling sound transmission through the pulmonary system and chest with application to diagnosis of a collapsed lung.

A theoretical and experimental study was undertaken to examine the feasibility of using audible-frequency vibro-acoustic waves for diagnosis of pneumothorax, a collapsed lung. The hypothesis was that the acoustic response of the chest to external excitation would change with this condition. In experimental canine studies, external acoustic energy was introduced into the trachea via an endotracheal tube. For the control (nonpneumothorax) state, it is hypothesized that sound waves primarily travel through the airways, couple to the lung parenchyma, and then are transmitted directly to the chest wall. In contradistinction, when a pneumothorax is present the intervening air presents an added barrier to efficient acoustic energy transfer. Theoretical models of sound transmission through the pulmonary system and chest region to the chest wall surface are developed to more clearly understand the mechanisms of intensity loss when a pneumothorax is present, relative to a baseline case. These models predict significant decreases in acoustic transmission strength when a pneumothorax is present, in qualitative agreement with experimental measurements. Development of the models, their extension via finite element analysis, and comparisons with experimental canine studies are reviewed.

Acoustic Stimulation↗
PubMed2004

Laennec's legacy.

Explore the source record for details and available documents.

Auscultation↗
PubMed2003

William Osler and Jacob Mendez Da Costa: Philadelphia medicine, 1884-1889.

When William Osler (1849-1919), at the age of 35, moved from Montreal to Philadelphia (the leading medical centre in the United States) in 1884, Jacob Mendez Da Costa (1833-1900) was 51, and Chair of Practice at Jefferson Medical College. During Osler's five frenetic years in Philadelphia, he and Da Costa shared medical and professional experiences, interactions with friends and colleagues, and participation in the leading medical organizations in the United States. The shared experiences reflect Philadelphia in the 1880s, the traditions, the times and the individuals. Although Da Costa was considered the greatest clinical teacher of his day, his career embodied Quaker Philadelphia and his legacy does not reflect the stature of the clinician and the man. In time, Osler became Sir William Osler, a man for the ages.

Clinical Medicine↗
PubMed2005

In memoriam: Clayton Daniel Mote, MD (1905-95).

Clayton Mote had a long career as a teacher, scholar and practitioner of medicine. He was noted for his diagnostic skills and rigorous approach to bedside teaching, with emphasis on the physical examination. The author's attitude towards him was a mixture of admiration for his talents and anxiety that one could never quite meet his expectations. People of his kind still have a place in modern academic medicine: they can be leaders and role models, they can integrate the new and the old, and they can inspire those under their tutelage to return to hands-on medicine.

Anecdotes as Topic↗